Sipitiy, V., Avrunin, O., Babalyan, Y.A. and Gunko, B. 1. MATHEMATICS ASPECTS OF IMPLANTS GEOMETRIC PARAMETERS DETERMINATION IN RECONSTRUCTIVE SURGERY OF FRONTO-ORBITAL OSSEUS DEFECTS. The Journal of V. N. Karazin Kharkiv National University, series "Medicine". 10 (1), 27-33.